Typewriting machine



Oct. 13, 1931.

c. GABRlf-:LsoN

TYPEWRITING MACHINE INVENTQR CARL GABRIELSON B/ Filed Oct. 24. 1929 2 Sheets-Sheet l ATTORNEYS Oct. 13, 1931. c. GABRIELSON TYPEWRITING MACHINE Filed Oct. 24. 1929 2 Sheets-Sheet 2 Patented Oct. 13, 1931 .tiszrniivmrrniasinc.,A or sYnAcUsE, Niiwyonx, VA CORPORATION vor NEW-,YORK

`rnygniiaifariane. MACHINE 1 to tabulating mechanism therefor. l

typewriting machines, 4and more particularly tabulatin'g, andA especially in operations involving relatively long jumps of the platen carriage', the -column. stopjbar frequently bends ortie-nes suilicientlyto cause a failurev to arrest the'carriage. Th'isis particularly apt to occur in the operationof'wide carriagel machines. Y, 1 i l;

`Generally stated, the purpose ofthe inven-I tion is to make provision foi-'the elimination of such failureskof the tabulating mechanism l tion-'and mounting of the improved column stol'ofbaran'd the stationary bracing device therefor-gp` 'l y r I f Fig. 4 a fragmentary vertical transverse,

to arrest the carriage at the'desired; point. More l particular objects of the invention'A are to provide' simple',V eilicientand inexpensive means for* preventing bending' or 'flexing 0i.V a columnstop bar upon impacting of coactive traveling and counter stops of c a "tabulating mechanism; to provide a tabulating-mechanism with means for preventing suchnbending or flexing of the column stop'bariwhiclr will permit carrying of column stopsat anyl letter space pointfor points along the'bar;

Withoutthe necessity otfremoving or shiftingr of the preventing means or any partthereof to provide stationary means coactive witha column stop barfof atraveling platen; carriage substantially at the poi-nt of lfenfgl'lagement of any one of theY columnstopson said bar with a non-traveling counterstopvr oranyfone of a.V series of non-travelingdenomina; tional stops; vandjto` provide'fixed bracing means on' the stationaryl frameworkfof-thev` machine located substantially md-'lengthof the travel of the platen earriagefand soen-v gaged with a notched'column ,stop bar on the'carriage as to prevent bending or flexingV ofthe barupon engagement of a column stop Y on'the bar with a coimter-stopon the frame'- work'; and toprovide V'zi-bracing meansof Vvthe kind last described wliich'will 'permit the notched'bar to carry asetofcolumn stops,y one` vforl yeach letter spaceposition ofthe carriageg any one ordesired ones of which l.may

:be shifted transversely of the bar from inactive'position to set or active positions n c The improvem ents-have beenshown em bodiedfin an L. C." Smith'jtypewriting A'maf' chineequipped withj' denominational tabu-Y -UNITU OFFICE .CARL GA'iaaIELsoN, :orsYnAcUsn-NEW Yon-1;N AssieNon To L. o.- sMITH a CORONA lating niechanism5'but it will be understood Y thatthe invention may be embodied in other machines andis not limited to use in con.-A Y nection with a denominational tabulatii'igA mechanism;y a -InA the drawings Fig.f1 is alfragmentaryYviewof` the ma-V chine,` partly in vertical longitudinalv sec- F a'detail viewshowingthe construci sectional view of the machine looking from thefro'ntyl 1 l, 1 f

`Fig 'aidetailplan view showingassociated parts ,ofthevr carriage' escapement and l`esca-pement releasing mechanism; and 'f Fig'. 6 a detailview showing the denominational stops andthe column stop bar bracing pin and .its mounting. A I '"3 '-The platencarriage y10 or the machine is mounted ,0nv the stationary main framework 11, and travels onball bearings 12.- The carriage is letter spaced through the medium of the rusual escapement mechanism actua-tediby the usual .universal bar v13.- The esca-pement mechanism comprises dog rocker `lliconneet-v edy with `the universal bar, Y escapement dogs 15- and'lG., escapement` wheel 17 and feed pinion' 18 mounted on the usual shaft journalle'don the framework 11, and the feed*V rackjlQpiiXet-l on the carriage and meshing Y with pinion 18.y pair of sheet metal brackets 20 :located ladjacent opposite sides olf the carriage Vare VI each heldtothey rear cross'barbysuitable .screwsas'shown at 21, each ofsaid brackets having V'a ,rearwardly extending larm lying' in a lhorizont-al'plane. Upon the top faces-of rectangular :cross-section. The stop bar E22 fis held tothebracket armsby-apair of screws 95"V `the rearendsofrsaid bracket arms are seated ff A f theend portions of la column stop bar 22 of the bar and are screwed into threaded holes in the bracket arms.

The front and rear faces of the column stop bar are provided'with vertical notches or grooves 24 in which are verticallyslidable, and frictionally held in vertically adjusted, relation to' the bar, the pendeniV legs of the sheet metal column stops 25. The rear leg of each stop is provided with a contact portion 2G which is located ata level above the lupper Contact ends 27 of the series of five pivoted denominational stops 28,`in the upper inactive adjusted position of the column stops as shown in Figs. 1 and 4. The bar notches are spaced one letter space dirtance apart and, preferablyya set of column stops 25 are mounted on bar 22, one stop for each letter space position of the carriage. Any desired one or ones of the stops 25 may be set in active position by pushing` the stop down until the upper transverse portion thereof vengages the top face of the bar, one of these stops being shown in set or ac ive position in Figs. 2 and 4.

The denominational or counter-stops 28 are pivoted between non-traveling thei r upper and lower ends on a transverse rod.

29 in a denominational stop housing comprising a vertically disposed metal casting 30 rigidly held at its lower end by screws 31 to the main frame 11 and located approximately midway between the sides of the machine. Stops 28 are normally held in inaciive position by springs 32 carried thereby and bearing against the stop housingk and are individually rockable to active position by key levers 33 pivot-ed on a rod 35 in the main frame and links 34 connecting each stop with its associated operating or setting key lever 33. Gne stop 28 is shown set in Fig. The carriage is released from control of the escapement for a jump movement under the pull of its spring drum 36 and cable 37 upon setting of either o-f `the stops 28 and during the last part of the setting movement of the stop by reason of the rocking of a release bail 38 by the actuated stop. Bail 38 is pivoted at 39 in housing v30 and is normally held in the position shown in Fig. 1 by a spring 40. This bail is providedwith a forwardly extending arm 41 to which is pivotally connected at 42 the lower end of a pull link 43 having a vertical lost-motion pin-and-slot connection at 44 with the forward arm of a transversely eXtendingU- shaped lever 45. Lever 45 is pivoted at 46 on the 'main frame andits rear arm is provided vwith a rearwardly extending lug 47 partly overhanging the nose of escapement dog 15. Dog 15 is normally engaged with escapem'ent wheel 17 as shown in Figs. l,

4 and 5, being pivoted at 48 in the dog rocker and yiel'dably held up by a spring 49 in the rocker. A stop 50 in the rocker limits the pivotal movement of the dog. Vhen link 43 is drawn fully down to the position shown in Fig. 2 it draws down the U-shaped lever until lug 47 depresses the pivoted dog 15 out of engagement with the escapement wheel, thus freeing the carriage.

, A steel bar 51 extends transversely of the machine below the forwardly extending upper extremities of the denominational stops, said bar lying flatwise in a horizontal plane and being rigidly held by screws 52 on a pair Vof standards 53 forming part of the stationary framework of the machine. steel plate 54 is held adjacent its rear end to said bar 51 by rivets 51a and to the upper end portion of housing 30 by screws 55. Plate 54 is located midway the sides of themachine, lies flatwise in a horizontal plane, and extends forwardly under and close to the bottom face of the column stop bar 22 and carries a brace member for the stop bar. This brace member preferably comprises a hard steel pin or vertical short post 56 having a reduced end portion 57 extending through a countersunk or downwardly and outwardly flaring hole in plate 54 and peened or headed as shown to rigidly lock the pin to the plate. The upper end portion of pin 56 is flattened or cut away at the front and rear, as shown, to form a dat stiff tongue 56l lying flatwise in a vertical plane parallel with column stop bar 22 and lying between the vertical planes of the root surfaces of the fore-and-aft stop bar notches and preferably approximately in the vertical medial plane of the bar.

Tongue 56a extends upwardly into and has aclose sliding fit in a longitudinal kerf or channel 58 cut in the bottom face of stop bar 22, which channel extends the full length of the notched or stop carrying portion of the bar and approximately the full length of the bar, as sho'wmthe bar and channel being of sufficient length to permit full travel of the platen carriage.

Pin 56 is held to plate 54 midway, or approXimately midway, between the sides of the machine and directly in front of the compactly arranged upper end portions of the set of denominational stops, being preferably directly forward of the central denominational stop, so as to always contact and brace the bar at a point in, or substantially in', the contact plane of the pair of traveling and nontraveling stops which coact to arrest the carriage in a tabulating operation. The bar is thus solidly backed up or braced directly at the point of application. of the bar bending or flexing force n'o matter which two stops impact against each other so that it is impossible for the active column stop to skip or cam past the active denominational stop.

It will, of course, be understood that the novel bracing means may be employed in conneet-ion with tabulating mechanism having a single non-travelingstop7 aswell 'as in conneeuen with tebuieting meenemen wherein the stop bar is not provided with a stop' for each letter space position of thecarriage or e is not provided with stops whichare slidably .v

adjustable transversely of the barintojand Vout of active position. c' U It will be observed thatvthe bracing means e does not interfere withfeither themounting of avcolumn stop or the sliding setting adjust` ment thereof in any letter space position along the column stop bar. f s

i, -VhatIclaimisi l. In a typewriting machine having a main frame and a power-driven escapem'lent-con'- trolled platen carriage thereon, the-combination with said frame and :carriage ofitabulatting said counter stop and reeing'said care ing means comprising a pairvof supports adjacent opposite. ends of the carriage, a stop carrying bar rigidly secured at its ends to said supports and having its fore andr aft sides vertically grooved and its under side provided with a longitudinal channel extending substantially the full lengtliof the 'ban-stops" each having a pair of pendent legs engaged in verticalv grooves-in the front and rearsides of said bar, an upstanding rigid brace member fixedly held to the main frame and having its upper end lportion slidably engaged in the longitudinal channel of the bara stop on the mainframe shiftable by its key topositionan l abutment portion thereof adjacent therear side of the stop bar in the path v,of movement of the rear legs of the stops yon the bar, escapef ment releasing means, keyoperated means for setting the frame stop and releasing the e. carriage from control of'its escapement, saidy i upper end portion of the brace member and abutment portion of the liframe stop both 'l being located substantially midway the sides of the frame.

2. In a typewriting machine,

a tabulator stop carrying-bar kheld adjacent said channel, and key-operated means for setriage'from control of its escapement. s AIn testimony whereof I hereunto aliX my signature.

the combination of a main frame, a power 'driven escapement controlled platen carriage on said vframe,

CARL GABRIELsoN. 

